

McqMate
Q. |
In a multimode fiber, much of light coupled in the fiber from an LED is |
A. | increased |
B. | reduced |
C. | lost |
D. | unaffected |
Answer» C. lost | |
Explanation: optical power from an incoherent source is initially coupled into large angle rays falling within acceptance angle of fiber but have more energy than meridional rays. energy from these rays goes into the cladding and thus may be lost. |
View all MCQs in
Optical CommunicationNo comments yet